US5660448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling the braking process in a motor vehicle
Assignee: Mercedes Benz Group AG
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Filing: 1995-11-13
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Granted: 1997-08-26
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Expires: 2015-11-13
Abstract
Abstract In a method for controlling the braking process of a motor vehicle, nonlinear boosting of the braking force is performed if the actuating speed of the brake pedal exceeds a specified trigger threshold value. This trigger threshold value is formed as a function of the instantaneous speed of the motor vehicle, the pedal position of the brake pedal or a variable directly proportional thereto, and of a motor vehicle specific, brake dependent correction value.
Inventors
- 👤 Wolfgang Kiesewetter
- 👤 Reinhard Helldorfer
- 👤 Heinz Eyyinger
- 👤 Bernd Gebhart
- 👤 Thomas Just
- 👤 Adam Weimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:06
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/3255; B60T8/3275; B60T7/00; B60T7/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
Method for controlling a braking process in a motor vehicle of the type in which nonlinear boosting of the braking force is performed if an actuating speed of a vehicle brake pedal exceeds a specified trigger threshold value, said method comprising the steps of: measuring vehicle speed and a brake pedal position for said vehicle; determining a threshold value for triggering boosting of braking force as a function of said vehicle speed and a pedal position of said brake pedal or a variable directly proportional thereto; determining a vehicle specific brake dependent correction value for said vehicle; and determining a corrected threshold value as a function of said determined threshold value and said vehicle specific brake dependent correction value; and triggering boosting of braking force as a function of said corrected threshold value.
Claim 2
Dependent Claim
133 words
Method for controlling a braking process in a motor vehicle of the type in which nonlinear boosting of the braking force is performed if an actuating speed of a vehicle brake pedal exceeds a specified trigger threshold value, said method comprising the steps of: measuring vehicle speed and a brake pedal position for said vehicle; determining a threshold value for triggering boosting of braking force as a function of said vehicle speed and a pedal position of said brake pedal or a variable directly proportional thereto; determining a vehicle specific brake dependent correction value for said vehicle; and determining a corrected threshold value as a function of said determined threshold value and said vehicle specific brake dependent correction value; and triggering boosting of braking force as a function of said corrected threshold value.
Claim 3
Dependent Claim
106 words
Method according to claim 1, wherein said step of determining a vehicle specific brake dependent correction value comprises the further steps of: determining a desired braking force from a braking force input during a braking operation; determining actual braking force during a braking operation; determining a current braking force transmission ratio based on said desired braking force and said actual braking force; determining a relative value for the braking force transmission ratio as a quotient of the current braking force transmission ratio and a predetermined standard braking force transmission ration for the motor vehicle; and determining said correction value as a function of said relative value.
Claim 4
Dependent Claim
22 words
Method according to claim 1, wherein the correction value is chosen so that different motor vehicles have the same trigger threshold value.
Claim 5
Dependent Claim
31 words
Method according to claim 1, wherein a time variation of the current braking-force transmission ratio is determined and evaluated during a braking process as a function of the braking force input.
Claim 6
Dependent Claim
26 words
Method according to claim 4 wherein relative values exhibiting a time dependence on the time variation of the braking process are formed during a braking process.
Claim 7
Dependent Claim
19 words
Method according to claim 4, wherein an average value for the relative value is formed during a braking process.
Claim 8
Dependent Claim
21 words
Method according to claims 4, wherein average values for the relative value are formed using a plurality of successive braking processes.
Claim 9
Dependent Claim
19 words
Method according to claim 1, wherein the braking force input is determined from pedal travel of the brake pedal.
Claim 10
Dependent Claim
19 words
Method according to claim 1, wherein the braking force input is determined from diaphragm travel of a brake booster.
Claim 11
Dependent Claim
19 words
Method according to claim 1, wherein the actual braking force is determined from the time variation of wheel speed.
References Cited (Backward Citations)
JPS6345336A
Cited
JPH04121260A
Cited
US5505526A
Cited
US5378052A
Cited
US5496097A
Cited
GB2280718A
Cited
US5564797A
Cited
US5535123A
Cited
US5584542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |